ISO/IEC TR 11802-5:1997 情報技術—システム間の電気通信と情報交換—ローカルおよびメトロポリタンエリアネットワーク—テクニカルレポートとガイドライン—パート5：ローカルエリアネットワークでのイーサネットV2.0のメディアアクセス制御（MAC）ブリッジング | ページ 2

Foreword

ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutai interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work.

In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.

The main task of technical committees is to prepare International Standards, but in exceptional circumstances a technical committee may propose the publication of a Technical Report of one of the following types:

• type 1, when the required support cannot be obtained for the publication of an International Standard, despite repeated efforts;
• type 2, when the subject is still under technical development or where for any other reason there is the future but not immediate possibility of an agreement on an International Standard;
• type 3, when a technical committee has collected data of a different kind from that which is normally published as an International Standard ("state of the art", for example).

Technical Reports of types 1 and 2 are subject to review within three years of publication, to decide whether they can be transformed into International Standards. Technical Reports of type 3 do not necessarily have to be reviewed until the data they provide are considered to be no longer valid or useful.

ISO/IEC TR 11802-5, which is a Technical Report of type 3, was prepared by Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 6, Telecommunications and information exchange between systems.

ISO/IEC 11802 consists of the following parts, under the general title Information technology — Telecommunications and information exchange between systems — Local and metropolitan area networks — Technical reports and guidelines:

• Part 1: The structure and coding of Logical Link Control addresses in Local Area Networks [Technical Report]
• Part 2: Standard Group MAC Addresses [Technical Report]
• Part 4: Token ring access method and physical layer specifications — Fibre optic station attachment
• Part 5: Media Access Control (MAC) Bridging of Ethernet V2.0 in Local Area Networks

For the purpose of assigning organizationally unique identifiers, the Institute of Electrical and Electronics Engineers, Inc., USA, has been designated by the ISO Council as the Registration Authority. Communications on this subject should be addressed to

Registration Authority for ISO/IEC 8802-3

c/o The Institute of Electrical and Electronics Engineers, Inc.

445 Hoes Lane, P.O. Box 1331

Piscataway, NJ 08855-1331

USA

2 References

The following specifications contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below.

3 Definitions

Annex D

Bibliography